let list of candidates = N closest colours to pixel
He had persuaded his science teacher to help him make a makeshift rocket. Somehow, he had managed to get his hands on the ingredients for gunpowder - potassium nitrate, sulphur and charcoal.
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// 当前遍历到的nums2元素（保持你的命名风格）
В России ответили на имитирующие высадку на Украине учения НАТО18:04